package com.sky.service.impl;

import com.sky.dto.GoodsSalesDTO;
import com.sky.entity.Orders;
import com.sky.mapper.OrderMapper;
import com.sky.result.Result;
import com.sky.service.ReportService;
import com.sky.service.WorkspaceService;
import com.sky.vo.*;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.GetMapping;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
@Slf4j
public class ReportServiceImpl implements ReportService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private WorkspaceService workspaceService;

    @Override
    public TurnoverReportVO getTurnoverStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> localDates = new ArrayList<>();
        localDates.add(begin);
        while (!begin.equals(end)) {
            begin = begin.plusDays(1);
            localDates.add(begin);
        }
        List<Double> turnoverList = new ArrayList<>();
        for (LocalDate localDate : localDates) {
            LocalDateTime beginTime = LocalDateTime.of(localDate, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(localDate, LocalTime.MAX);
            Map map = new HashMap();
            map.put("begin", beginTime);
            map.put("end", endTime);
            map.put("status", Orders.COMPLETED);
            Double aDouble = orderMapper.sumByMap(map);
            aDouble = aDouble == null ? 0.0 : aDouble;
            turnoverList.add(aDouble);
        }
        return TurnoverReportVO.builder().dateList(StringUtils.join(localDates, ",")).turnoverList(StringUtils
                .join(turnoverList, ",")).
                build();

    }

    @Override
    public UserReportVO getUserStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dateList = new ArrayList<>();
        dateList.add(begin);

        while (!begin.equals(end)){
            begin = begin.plusDays(1);
            dateList.add(begin);
        }
        List<Integer> newUserList = new ArrayList<>();
        List<Integer> totalUserList = new ArrayList<>();
        for (LocalDate date : dateList) {
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
            //新增用户数量 select count(id) from user where create_time > ? and create_time < ?
            //总用户数量 select count(id) from user where  create_time < ?
            Map map=new HashMap();
            map.put("end",endTime);
            Integer totalUser=orderMapper.getCount(map);
            map.put("begin",beginTime);
            Integer newUser = orderMapper.getCount(map);
            newUserList.add(newUser);
            totalUserList.add(totalUser);
        }

        return UserReportVO.builder()
                .dateList(StringUtils.join(dateList,","))
                .newUserList(StringUtils.join(newUserList,","))
                .totalUserList(StringUtils.join(totalUserList,","))
                .build();
    }

    @Override
    public OrderReportVO getOrderReport(LocalDate begin, LocalDate end) {
        List<LocalDate> localDates=new ArrayList<>();
        localDates.add(begin);
        while (!begin.equals(end)){
            begin=begin.plusDays(1);
            localDates.add(begin);
        }
        List<Integer> orderCountList=new ArrayList<>();//每日总订单数
        List<Integer> validOrderCountList=new ArrayList<>();//每日有效订单数
        for (LocalDate localDate : localDates) {
            LocalDateTime beginTime = LocalDateTime.of(localDate, LocalTime.MIN);
            LocalDateTime endTime=LocalDateTime.of(localDate,LocalTime.MAX);
            Map map=new HashMap();
            map.put("begin",beginTime);
            map.put("end",endTime);
            Integer i = orderMapper.getOrders(map);
            map.put("status",Orders.COMPLETED);
            Integer j=orderMapper.getOrders(map);
            orderCountList.add(i);
            validOrderCountList.add(j);
        }
        //开始计算指定时间段内订单完成率
        Integer orderCountSum=0;
        Integer validOrderCountSum=0;
        Double percentage=0.0;
        for (Integer integer : orderCountList) {
                orderCountSum=integer+orderCountSum;
        }
        for (Integer integer : validOrderCountList) {
                validOrderCountSum=integer+validOrderCountSum;
        }
        if(orderCountSum!=null){
            percentage=validOrderCountSum.doubleValue()/orderCountSum;
        }
        return OrderReportVO.builder()
                .dateList(StringUtils.join(localDates,","))
                .orderCountList(StringUtils.join(orderCountList,","))
                .validOrderCountList(StringUtils.join(validOrderCountList,","))
                .totalOrderCount(orderCountSum)
                .validOrderCount(validOrderCountSum)
                .orderCompletionRate(percentage)
                .build();
    }

    @Override
    public SalesTop10ReportVO getTop10Report(LocalDate begin, LocalDate end){
            List<LocalDate> localDates=new ArrayList<>();
            localDates.add(begin);
            while (!begin.equals(end)){
                begin=begin.plusDays(1);
                localDates.add(begin);
            }
            List<String> top10Name=new ArrayList<>();
            List<Integer> top10Number=new ArrayList<>();
        for (LocalDate localDate : localDates) {
            LocalDateTime beginTime = LocalDateTime.of(localDate, LocalTime.MIN);
            LocalDateTime endTime=LocalDateTime.of(localDate,LocalTime.MAX);
            Map map=new HashMap();
            map.put("begin",beginTime);
            map.put("end",endTime);
            List<GoodsSalesDTO> top10Report = orderMapper.getTop10Report(map);
            for (GoodsSalesDTO goodsSalesDTO : top10Report) {
                top10Name.add(goodsSalesDTO.getNe());
                top10Number.add(goodsSalesDTO.getNumber());
            }
        }
        return SalesTop10ReportVO.builder()
                .nameList(StringUtils.join(top10Name,","))
                .numberList(StringUtils.join(top10Number,","))
                .build();
    }

    @Override
    public void exportBusinessData(HttpServletResponse response) {
        //1. 查询数据库，获取营业数据---查询最近30天的运营数据
        LocalDate dateBegin = LocalDate.now().minusDays(30);
        LocalDate dateEnd = LocalDate.now().minusDays(1);

        //查询概览数据
        BusinessDataVO businessDataVO = workspaceService.getBusinessData(LocalDateTime.of(dateBegin, LocalTime.MIN), LocalDateTime.of(dateEnd, LocalTime.MAX));

        //2. 通过POI将数据写入到Excel文件中
        InputStream in = this.getClass().getClassLoader().getResourceAsStream("template/运营数据报表模板.xlsx");

        try {
            //基于模板文件创建一个新的Excel文件
            XSSFWorkbook excel = new XSSFWorkbook(in);
            //获取表格文件的Sheet页
            XSSFSheet sheet = excel.getSheet("Sheet1");

            //填充数据--时间
            sheet.getRow(1).getCell(1).setCellValue("时间：" + dateBegin + "至" + dateEnd);

            //获得第4行
            XSSFRow row = sheet.getRow(3);
            row.getCell(2).setCellValue(businessDataVO.getTurnover());
            row.getCell(4).setCellValue(businessDataVO.getOrderCompletionRate());
            row.getCell(6).setCellValue(businessDataVO.getNewUsers());

            //获得第5行
            row = sheet.getRow(4);
            row.getCell(2).setCellValue(businessDataVO.getValidOrderCount());
            row.getCell(4).setCellValue(businessDataVO.getUnitPrice());

            //填充明细数据
            for (int i = 0; i < 30; i++) {
                LocalDate date = dateBegin.plusDays(i);
                //查询某一天的营业数据
                BusinessDataVO businessData = workspaceService.getBusinessData(LocalDateTime.of(date, LocalTime.MIN), LocalDateTime.of(date, LocalTime.MAX));

                //获得某一行
                row = sheet.getRow(7 + i);
                row.getCell(1).setCellValue(date.toString());
                row.getCell(2).setCellValue(businessData.getTurnover());
                row.getCell(3).setCellValue(businessData.getValidOrderCount());
                row.getCell(4).setCellValue(businessData.getOrderCompletionRate());
                row.getCell(5).setCellValue(businessData.getUnitPrice());
                row.getCell(6).setCellValue(businessData.getNewUsers());
            }

            //3. 通过输出流将Excel文件下载到客户端浏览器
            ServletOutputStream out = response.getOutputStream();
            excel.write(out);

            //关闭资源
            out.close();
            excel.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
    }

